Installation of mountain footwork accessories

Pedal is also a car in a three parts, mountain bike's foot should be how to install it?
1, remove the drive side of the foot, the crank to 3 o'clock direction, insert the pedal wrench. Counterclockwise push is to push the wrench from top to bottom. With the power of the body to release the foot. Then remove the pedals and prevent the washers from being lost (some feet have no washers).
2, now, remove the non-drive side pedal. First, make the crank position in the 9 o'clock direction, insert the wrench, clockwise rotation. And help with the weight of the body to complete. Release the foot after the release of the foot, the same to prevent the gasket is lost.
3, spend a minute to clean the crank and pedal thread any dirt. With a small amount of grease, and then start the installation. So as to ensure that the foot is not damaged, but also as much as possible to prevent the pedal creak sound. With a clean hand to complete the whole process, open the driver side of the pedal, clockwise tightening, the non-drive side pedal counterclockwise tightening.